This is known as the motor’s kV rating. kV is simply motor RPM per volt of input. A 100kV motor will spin at 100 rpm when a single volt is applied to it, 500 RPM at 5V, etc. Electric drive units ...
In the long term, it should be possible to parameterize the design of one of these printed motors, effectively allowing anyone to type in the torque and Kv rating of a desired motor, plug that ...